Method of manufacturing a color filter

ABSTRACT

A method for manufacturing a color filter comprises a step for charging an ink comprising a thermosetting resin composition onto an opening of a black matrix provided on a transparent substrate and a step for curing the ink by heat treatment. The thermosetting resin composition comprises either a coloring agent, a multifunctional epoxide having at least two glycidyl groups and a compound crosslinked by the multifunctional epoxide; or a coloring agent, a cellulose-reactive compound and a compound crosslinked by the cellulose-reactive compound.

This is a divisional of Application Ser. No. 08/925,151, filed Sep. 8,1997, now U.S. Pat. No. 6,084,066.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to color filters used in color displaydevices and the like and methods for manufacturing the same. Inparticular, the present invention relates to a color filter suitable forcolor liquid crystal display devices which are used for color televisionsets, car television sets, personal computers and game machines, aliquid crystal display device using the color filter, methods formanufacturing them, and an ink for ink jet recording which is used inthese methods.

2. Description of the Related Art

In recent years, the demand for liquid crystal displays and particularlycolor liquid crystal displays has increased with growth of the personalcomputer market and especially the portable personal computer market;consequently, cost reduction of liquid crystal displays and particularlyexpensive color filters has been greatly needed for further growth ofthe market. Various methods, as described below, have been attempted inorder to achieve cost reductions while satisfying the characteristicsrequired for color filters. No methods satisfying all of the requiredcharacteristics, however, have been proposed.

The first attempted method is a staining process, in which a watersoluble polymer as a staining material is applied on a glass substrate,the coating film is subjected to photolithography to form a givenpattern, and the substrate is dipped into a staining bath to form acolored pattern. These procedures are repeated three times to form red(R), green (G) and blue (B) colored layers.

The second attempted method is a pigment dispersion process which hastaken the place of the staining method, recently. In this process, aphotosensitive resin layer containing dispersed pigment is formed on asubstrate, and subjected to patterning to obtain a given pattern. Theprocedures are repeated three times to form R, G and B colored layers.

The third method is an electrodeposition process, in which a transparentelectrode pattern is formed on a substrate, and the substrate is dippedinto an electrodeposition solution containing a pigment, a resin and anelectrolytic solution to electro-deposit a first color. The proceduresare repeated three times to form R, G and B colored layers, followed bybaking.

The fourth method includes dispersing a pigment in a thermosetting resinand printing the dispersion. The procedures are repeated three times toform R, G and B colored layers and the substrate is heated to cure thethermosetting resin. Protective films are generally formed on thecolored layers in all the processes.

One of common problems of these processes is high production cost due totriplicated coloring or staining procedures which are unavoidable inorder to form R, G and B colored layers. Further, such repeatedprocedures result in a decreased yield. In the electrodepositionprocess, the shape of the formable pattern is limited, and thus a colorfilter prepared by this process is not applicable to thin filmtransistor (TFT) substrates in the current technology. The printingprocess is not suitable for fine pitch patterning due to inferiorresolution and smoothness.

In order to overcome these problems, methods for manufacturing colorfilters by means of ink jet processes are disclosed in Japanese PatentLaid-Open Nos. 59-75205, 63-235901 and 1-217320. These methods, however,are not satisfactory.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a high-definition,reliable color filter which satisfies essential characteristics, such asheat resistance, solvent resistance and image resolution, and preventscolor mixing, uneven coloring, and coloring defects.

It is another object of the present invention to reduce the number ofsteps needed to produce a color filter by use of an ink jet process andthus reduce the production cost of liquid crystal devices.

In accordance with the present invention, a method for manufacturing acolor filter comprises a step for charging an ink comprising athermosetting resin composition onto an opening of a black matrixprovided on a transparent substrate and a step for curing the ink byheat treatment, the thermosetting resin composition comprising: acoloring agent, a multifunctional epoxide having at least two glycidylgroups and a compound crosslinked by the multifunctional epoxide; or acoloring agent, a cellulose-reactive compound and a compound crosslinkedby the cellulose-reactive compound.

Another aspect of the present invention is a color filter made by theabove-mentioned method.

A further aspect of the present invention is a liquid crystal displaydevice comprising a liquid crystal composition inserted between a pairof substrates each having an electrode, in which the above-mentionedcolor filter is provided on one of the substrates.

A further aspect of the present invention is a method for manufacturinga liquid crystal display device comprising a liquid crystal compositioninserted between a pair of substrates, each having an electrode, inwhich a color filter made by the above-mentioned method is provided onone of the substrates.

Still another aspect of the present invention is a method formanufacturing a liquid crystal display device comprising a liquidcrystal composition inserted between a TFT substrate having a colorfilter and an electrode substrate arranged opposite the TFT substrate,in which the color filter is made by the above-mentioned method, and thepixel sections of the substrate provided with the formed TFT array areindented.

A still further aspect of the present invention is an ink for ink jetrecording comprising a thermosetting resin composition comprising acoloring agent, a multifunctional epoxide having at least two glycidylgroups and a compound crosslinked by the multifunctional epoxide.

A still further aspect of the present invention is an ink for ink jetrecording comprising a thermosetting resin composition comprising acoloring agent, a cellulose-reactive compound and a compound crosslinkedby the cellulose-reactive compound.

The methods in accordance with the present invention permit simplifiedproduction of a color filter having high heat resistance, solventresistance and resolution, not having color mixing, uneven coloring orcoloring defects, and not discoloring or cracking during the productionsteps. An inexpensive and reliable liquid crystal device provided withthe color filter can also be produced without deterioration due to heattreatment and solvents employed in the following steps.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A, 1B, 1C and 1D are outlined cross-sectional views of a firstembodiment of a method for manufacturing a color filter in accordancewith the present invention;

FIGS. 2A, 2B, 2C, 2D and 2E are outlined cross-sectional views of asecond embodiment of a method for manufacturing a color filter inaccordance with the present invention;

FIG. 3 is an outlined cross-sectional view of a TFT color liquid crystaldevice provided with a color filter obtained by the first embodimentshown in FIGS. 1A to 1D;

FIG. 4 is an outlined cross-sectional view of a TFT color liquid crystaldevice in which a color filter in accordance with the present inventionis provided on a TFT substrate;

FIG. 5 is an outlined plan view of the TFT substrate shown in FIG. 4;and

FIGS. 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6I, 6J and 6K are cross-sectionalviews illustrating production steps for making the liquid crystal deviceshown in FIGS. 4 and 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention will now be described in detail with reference tothe drawings.

A first embodiment of a method for manufacturing a color filter inaccordance with the present invention is shown in FIGS. 1A, 1B, 1C and1D. The following Steps A to D correspond to FIGS. 1A, 1B, 1C and 1D,respectively. This embodiment is an example of the formation of a colorfilter, in which a black matrix is provided on a substrate, and an inkin accordance with the present invention is charged on indented sectionsformed by the open sections of the black matrix by an ink jet system.

Step A

A black matrix 2 is formed on a substrate 1. Indented sections forcharging an ink are thereby formed in the openings of the black matrix2. In the present invention, a glass substrate is generally used as thesubstrate 1, but other substrates can be used as long as they havetransparency and mechanical strength, which are essentialcharacteristics for color filters for liquid crystals. The black matrix2 can be formed by a conventional photolithographic process using ablack-pigment-containing resin (resist). It is preferable that thethickness of the black-pigment-containing resin matrix be at least 0.5μm. At a thickness of less than 0.5 μm, the optical density of the blackmatrix decreases to an extent that the black matrix does not functionsatisfactorily. Further, the charged ink floods out of the indentedsections, resulting in the mixing of different color inks.

Step B

R, G and B inks are discharged toward the substrate by an ink jetprocess so as to embed the inks in the indented sections in order toform a color pattern. The R-G-B pattern may also be formed by a castingprocess. It is preferred that the color inks be charged on the blackmatrix 2 so that they do not overlap with each other.

The ink used in the present invention comprises (1) a thermosettingresin composition comprising a coloring agent, a multifunctional epoxidehaving at least two glycidyl groups and a compound crosslinked by theepoxide (hereinafter referred to as ink (1)), or (2) a thermosettingresin composition comprising a coloring agent, a cellulose-reactivecompound and a compound crosslinked by the cellulose-reactive compound(hereinafter referred to as ink (2)).

Examples of usable coloring agents include dyes and pigments.Non-limiting examples of dyes include C. I. Acid Red 118, C. I. Acid Red254, C. I. Acid Green 25, C. I. Acid Blue 113, C. I. Acid Blue 185 andC. I. Acid Blue 7. Non-limiting examples of pigments include C. I.Pigment Red 177, C. I. Pigment Red 5, C. I. Pigment Red 12, C. I.Pigment Green 36, C. I. Pigment Blue 209 and C. I. Pigment Blue 16.These dyes and pigments are preferably used in amounts of approximately0.1 to 20 percent by weight of the inks.

The multifunctional epoxide having at least two glycidyl groups, whichis contained in ink (1) in accordance with the present invention, isused as a crosslinking agent and reacts with functional groups havingactive hydrogen atoms, e.g. hydroxyl groups, carboxyl groups and aminogroups. The epoxide also reacts with acid anhydrides. Examples of themultifunctional epoxides include ethylene glycol diglycidyl ether,polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether,polypropylene glycol diglycidyl ether, neopentyl glycol diglycidylether, glycerol polyglycidyl ether, polyglycerol polyglycidyl ether,trimethylolpropane polyglycidyl ether, diglycerol polyglycidyl ether,sorbitol polyglycidyl ether, sorbitan polyglycidyl ether,pentaerythritol polyglycidyl ether, triglycidyl tris(2-hydroxyethyl)isocyanurate and adipic acid diglycidyl ether.

It is preferable that the multifunctional epoxide having at least twoglycidyl groups be used in an amount of 0.01 to 10 percent by weight ofthe ink. These multifunctional epoxides can be used alone or incombination.

The compound crosslinked by the multifunctional epoxide contained in theink in accordance with the present invention is not limited as long asit has at least one active hydrogen, such as a hydroxyl group, acarboxyl group or an amino group and the ink is hardened by heattreatment. It is preferable that the compound be a polymeric compound inorder to achieve satisfactory heat resistance and solvent resistance.Examples of the compounds include polyvinyl alcohol; acrylic resins,such as polyacrylic acid, polymethacrylic acid, polyacrylate esters,polymethacrylate esters and polyhydroxymethyl methacrylate; siliconeresins, epoxy resins; cellulose derivatives, such as hydroxypropylcellulose, hydroxyethyl cellulose, methyl cellulose and carboxymethylcellulose and modified derivatives thereof; and polyvinyl pyrrolidone.These polymeric compounds can be used alone or in combination. It ispreferable that the compound crosslinked by the multifunctional epoxidebe used in the ink in an amount of 0.05 to 20 percent by weight.

The cellulose-reactive compound, which is contained in ink (2) inaccordance with the present invention, is a generic group of compoundswhich react with hydroxyl groups in the cellulose. Thecellulose-reactive compound also reacts with functional groups having areactive hydrogen atom, e.g., a carboxyl group or an amino group.Examples of cellulose-reactive compounds include dimethylolurea,dimethylolethyleneurea, dimethylolalkyltriazone, methylateddimethylolurone, dimethylol glyoxal monoureine, dimethylolpropyleneureaand derivatives thereof. Among these, dimethylolurea,dimethylolethyleneurea, and their derivatives are preferably used inorder to obtain satisfactory results in the present invention. It ispreferable that the cellulose-reactive compound be used in the ink in anamount of 0.01 to 10 percent by weight. The cellulose-reactive compoundsmay be used alone or in combination.

The compound crosslinked by the cellulose-reactive compound contained inthe ink in accordance with the present invention is not limited as longas it has at least one active hydrogen, such as a hydroxyl group, acarboxyl group or an amino group, and the ink is hardened by heattreatment. It is preferable that the compound be a polymeric compound inorder to achieve satisfactory heat resistance and solvent resistance.Examples of the compounds include polyvinyl alcohol; acrylic resins,such as polyacrylic acid, polymethacrylic acid, polyacrylate esters,polymethacrylate esters and polyhydroxymethyl methacrylate; siliconeresins, epoxy resins; cellulose derivatives, such as hydroxypropylcellulose, hydroxyethyl cellulose, methyl cellulose and carboxymethylcellulose and modified derivatives thereof; and polyvinyl pyrrolidone.These polymeric compounds can be used alone or in combination. It ispreferable that the compound crosslinked by the cellulose-reactivecompound be used in the ink in an amount of 0.05 to 20 percent byweight.

Aqueous solvents suitable for the ink in accordance with the presentinvention used in ink jet processes are mixtures of water and watersoluble organic solvents. It is preferable that deionized water(ion-exchanged water) be used instead of ordinary water containingvarious ions.

Examples of the water soluble organic solvents which can be used withwater include alkyl alcohols having 1 to 4 carbon atoms, e.g. methylalcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butylalcohol, sec-butyl alcohol and tert-butyl alcohol; amides, e.g. dimethylformamide and dimethyl acetamide; ketones and ketoalcohols, e.g. acetoneand diacetone alcohol; ethers, e.g. tetrahydrofuran and dioxane;polyvalent alcohols, such as polyethylene glycol and polypropyleneglycol, alkylene glycols in which each alkylene group has 2 to 6 carbonatoms, e.g. ethylene glycol, propylene glycol, butylene glycol,triethylene glycol, 1,2,6-hexane triol, thiodiglycol, hexylene glycoland diethylene glycol, glycerol; lower alkyl ethers of polyvalentalcohols, e.g. ethylene glycol monomethyl (or monoethyl) ether,diethylene glycol monomethyl (or monoethyl) ether and triethylene glycolmonomethyl (or monoethyl) ether; and miscellaneous solvents, e.g.N-methyl-2-pyrrolidone, 2-pyrrolidone, and1,3-dimethyl-2-imidazolidinone. Among them, polyvalent alcohols such asdiethylene glycol, and lower alkyl ethers of polyvalent alcohols such astriethylene glycol monomethyl (or monoethyl) ether are preferably used.

The ink preferably contains a lower alkyl ether of ethanol, isopropylalcohol or a polyvalent alcohol in order to achieve stable dischargefrom ink jet printers. The addition of such a solvent is considered toprovide for stable foaming on thin film resistance elements inbubble-jet-type ink jet printers.

The ink in accordance with the present invention can also include asurfactant, a defoaming agent, an antiseptic agent and a commerciallyavailable aqueous dye, if necessary, according to the required physicalproperties.

For example, any surfactants not adversely affecting the shelf life canbe used. Examples of such surfactants include anionic surfactants, e.g.fatty acid salts, higher alcohol sulfate ester salts, liquid fatty oilsulfate ester salts and alkyl allyl sulfate salts; and nonionicsurfactants, e.g. polyoxyethylene alkyl ethers, polyoxyethylene alkylesters, polyoxyethylene sorbitan alkyl esters, acetylene alcohol andacetylene glycol. These surfactants may be used alone or in combination.

Further, the ink in accordance with the present invention may containorganic ammonia; amines, e.g., diethanol amine and triethanol amine;inorganic alkalies such as alkaline metal hydroxides, e.g. sodiumhydroxide, lithium hydroxide and potassium hydroxide; organic acids andinorganic acids, in order to adjust the ink's pH which determines theshelf life of the ink.

Ink jet processes usable in the present invention include bubble jettypes using electrothermal transducers as energy sources, and piezo-jettypes using piezoelectric devices. The discharge area and pattern can beappropriately determined according to need.

Step C

The discharged ink 4 is hardened or cured by heat treatment to form acolor filter 9. It is preferable that the substrate be treated at atemperature of 150° C. or more in order to form a color filter which hassufficiently high thermal resistance and solvent resistance, and isresistant to heat and solvent treatment in the following steps.

Step D

A resin composition is applied onto the entire substrate surface andcured by light irradiation and/or thermal treatment to form a protectivefilm 5. Any resin which is transparent and durable to the following ITO(indium tin oxide) forming and alignment film forming processes can beused as the resin composition. The protective film 5 provided on thecolor filter is not always necessary.

Next, a second embodiment of a method for manufacturing a color filterin accordance with the present invention will be described. Thefollowing Steps A to E correspond to FIGS. 2A to 2E. In this embodiment,the ink is charged after an ink receiving layer is formed on acolor-filter-forming surface.

Step A

As in the first embodiment, a glass substrate 1 provided with a blackmatrix 2 is prepared.

Step B

A resin composition is applied to the entire substrate surface toprovide an ink receiving layer 3. The ink receiving layer 3 receives inkand adjusts the spread of the charged ink to a desirable size. The inkreceiving layer 3 is composed of a resin composition having processresistance, e.g., thermal resistance. Preferable resins have moderate orweak water repellency and oil repellency. Examples of preferable resinsinclude acrylic resins, epoxy resins and imide resins. The resincomposition may be curable by heat and/or light. The curable resincomposition may be cured after ink discharge.

The resin composition can be applied by a spin coating process, a rollcoating process, a bar coating process, a spray coating process or a dipcoating process.

Step C

R, G and B inks 4 are discharged on the ink receiving layer 3 by an inkjet printer.

Step D

The inks and the ink receiving layer are cured by thermal treatment andthen optional light irradiation to form a color filter 9.

Step E

As in the first embodiment, a resin composition is applied to the entiresubstrate surface and cured by light irradiation and/or heat treatmentto form a protective film 5.

FIG. 3 is an outlined cross-sectional view of an embodiment of a displaysection of a liquid crystal device in accordance with the presentinvention, in which a color filter in accordance with the firstembodiment is assembled. The second embodiment represents a TFT colorliquid crystal device.

The TFT color liquid crystal device includes a substrate 1 provided witha color filter 9, a substrate 11 provided with a TFT matrix, these twosubstrates being bonded to each other with a sealing agent not shown inthe drawing, and a liquid crystal compound 15 encapsulated into the gap(2 to 5 μm) between the two substrates. A TFT (not shown in the drawing)matrix and a pixel electrode matrix 12 are formed on the inner surfaceof one substrate. A color filter matrix 9 is formed on the inner surfaceof the other substrate so as to overlap with the pixel electrode matrix12. Protective film 5 is formed on the inner surface of the substratewith the color filter matrix, and a transparent counter or commonelectrode 14 is formed thereon over the entire surface. Further,alignment films 13a and 13b are formed on the inner surfaces of the twosubstrates and subjected to rubbing in order to achieve unidirectionalalignment of liquid crystal molecules. The outer surfaces of the glasssubstrates are provided with polarizing plates 16a and 16b. The backlight 17 used consists of fluorescent light and scattered light (thedrawing does not show both), and the liquid crystal composition acts asa light shutter, which changes transmittance of the back light 17, fordisplaying images.

Examples of preferable liquid crystal devices in the present inventioninclude twisted nematic (TN) liquid crystals and ferroelectric liquidcrystals (FLCs).

Although the color filter is provided on the substrate opposite to theTFT substrate in FIG. 3, the black matrix 2 and the color filter 9 canbe provided on the TFT substrate. FIG. 4 is an outlined cross-sectionalview of a display section of such a liquid crystal, and FIG. 5 is a planview of such a TFT substrate, wherein for conciseness no pixelelectrodes are shown. FIG. 4 is taken along the 4-4' crosssection inFIG. 5. As shown in FIG. 4, a TFT pattern comprising a gate electrode102, a gate insulating film 103, an i-type amorphous silicon film 104,an etching stop layer 105, an ohmic contact layer 106, a sourceelectrode 107 and a drain electrode 108 is formed on a first glasssubstrate 101. Each drain electrode 108 is connected to a transparentpixel electrode 114 through a passivation film 110 and a light screeningfilm 111. A color filter 113 is provided between the transparent pixelelectrode 114 and the glass substrate 101. An alignment film 115 isformed on the entire surfaces of the TFT 109 and the transparent pixelelectrode 114.

On the other hand, a common transparent electrode 117 and an alignmentfilm 118 are formed on a second glass substrate 116. The first glasssubstrate 101 and the second glass substrate 116 are disposed oppositeeach other with a gap of approximately 5 μm between them, and the gapbetween the two electrodes is filled with liquid crystal 119. FIG. 5also shows contact hole 112 which connects the transparent pixelelectrode 114 to the drain electrode 108.

FIGS. 6A, 6B, 6C, 6D, 6E, 6F, 6G, 6H, 6I, 6J and 6K are cross-sectionalviews illustrating production steps of a liquid crystal in accordancewith this embodiment. These steps will now be described, wherein thefollowing Steps A to K correspond to FIGS. 6A to 6K.

Step A

A gate electrode 102 composed of Cr, Ta or the like and having athickness of approximately 2,000 angstroms is formed on a glasssubstrate 101.

Step B

A gate insulating film 103 having a thickness of approximately 5,000angstroms is formed on the gate electrode 102. A single-layered filmcomposed of SiN, Si₃ N₄, TaO or Ta₂ O₅ or a multilayered film comprisinga plurality of single-layered films is used as the gate insulating film.

Step C

An i-type amorphous silicon film 104 having a thickness of approximately2,000 angstroms and an etching stop layer 105 are formed on the gateinsulating film 103. The etching stop layer 105 protects the i-typeamorphous silicon film 104 as a channel region during Step F, i.e., anetching step as described below. The etching stop layer 105 is formedusing a material having a different etching rate from those of thei-type amorphous silicon film 104 and the ohmic contact layer describedbelow, and may be, for example, an insulating film composed of SiN orSi₃ N₄.

Step D

The etching stop layer 105 is subjected to patterning.

Step E

An ohmic contact layer 106 having a thickness of approximately 3,000angstroms is formed on the i-type amorphous silicon film 104 and theetching stop layer 105. The ohmic contact layer 106 is generallycomposed of n⁺ -type amorphous silicon or microcrystal silicon.

Step F

A source electrode 107 and a drain electrode 108 are formed on the ohmiccontact layer 106, and unnecessary sections of the ohmic contact layer106, the i-type amorphous silicon film 104 and the gate insulating film103 are removed by an etching process to form a TFT 109. The sourceelectrode 107 and the drain electrode 108 are generally composed of Alor Mo.

Step G

The TFT is covered with a passivation film 110 composed of SiN or thelike, and a light screening layer 111 composed of a resin is formedthereon. In this embodiment, the light screening layer 111 blocks lightthat may cause malfunction of the TFT, and corresponds to the blackmatrix in the first embodiment. The same material as the black matrixmaterial in the first embodiment therefore is applied and subjected tomask exposure.

Step H

The passivation film and the light screening film on the open region 120are developed and a contact hole 112 is formed on the drain electrode108.

Step I

A color filter 113 is formed on the opening region. Inks in accordancewith the present invention are charged on given positions with an inkjet printer and cured by heat treatment to form the color filter 113.

Step J

A transparent pixel electrode 114 composed of ITO is formed on the colorfilter 113, and is connected to the drain electrode 108 through thecontact hole. An alignment film 115 composed of polyimide is formed onthe entire surface of the TFT and the transparent pixel electrode 114.

Step K

A glass substrate 116 provided with a common transparent electrode 117and an alignment film 118 and a glass substrate 101 provided with a TFTand a color filter 113 are arranged opposite each other, and the gapbetween these two electrodes is filled with liquid crystal 119.

Inks used in the present invention are also usable in ink jet processesfor printing on paper, films and the like, as well as for color filterproduction. The inks give clear images and have good water-proofproperties.

In the above-mentioned embodiments, the production steps are describedusing an ink jet process which is preferred in the present invention.Other ink charging processes may also be used.

EXAMPLES

The present invention will now be described in more detail withreference to examples.

Example 1-1

A black pigment resist CK-S171B made by Fuji-Hunt Electronics TechnologyCo., Ltd. was applied on a glass substrate by a spin coating processsuch that the film thickness was 1.0 μm, exposed, developed and treatedwith heat to form a black matrix having a thickness of 1.0 μm. R, G andB inks were discharged on openings by an ink jet printer.

Ink formulations were as follows, wherein "pbw" means parts by weightand the formulations are based on one hundred parts:

(Red (R) ink)

    ______________________________________                                        C.I. Acid Red 118    5 pbw                                                    Glycerol polyglycidyl ether                                                                      1.5 pbw                                                    ______________________________________                                    

(DENACOL EX-313 made by Nagase Chemicals Ltd.)

Acrylic acid-methyl methacrylate-hydroxyethyl methacrylate

    ______________________________________                                        terpolymer         3 pbw                                                      N-methyl-2-pyrrolidone                                                                          15 pbw                                                      Ethylene glycol   20 pbw                                                      Ethanol            2 pbw                                                      Deionized water   53.5 pbw                                                    (Green (G) ink)                                                               C.I. Acid Green 25                                                                               5 pbw                                                      ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

(Blue (B) ink)

    ______________________________________                                        C.I. Acid Blue 113                                                                             5 pbw                                                        ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

The three discharged inks were cured by heat treatment at 230° C. for 40minutes to form a color filter for liquid crystal devices.

The color filter was observed under an optical microscope. No colormixing and color unevenness were observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 1-2

After a color filter was prepared as in Example 1-1, a two-packthermosetting resin Optomer SS6500 made by Japan Synthetic Rubber Co.,Ltd. was applied thereon by a spin coating process such that the filmthickness was 1 μm, and cured by heat treatment at 230° C. for 30minutes to form a protective film.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 1-3

A color filter was prepared as in Example 1-1, except that the followinginks were used.

(Red (R) ink)

    ______________________________________                                        C.I. Acid Red 118   5 pbw                                                     Diglycerol polyglycidyl ether                                                                     1 pbw                                                     ______________________________________                                    

(DENACOL EX-421 made by Nagase Chemicals Ltd.)

Methacrylic acid-ethyl acrylate-hydroxyethyl methacrylate

    ______________________________________                                        terpolymer           3 pbw                                                    Ethylene glycol monoethyl ether                                                                   25 pbw                                                    Ethylene glycol     20 pbw                                                    Isopropyl alcohol    2 pbw                                                    Deionized water     44 pbw                                                    (Green (G) ink)                                                               C.I. Acid Green 25   5 pbw                                                    ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

(Blue (B) ink)

    ______________________________________                                        C.I. Acid Blue 113                                                                             5 pbw                                                        ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 1-4

A color filter was prepared as in Example 1-1, except that the followinginks were used.

(Red (R) ink)

    ______________________________________                                        C.I. Acid Red 254     5 pbw                                                   Polyethylene glycol diglycidyl ether                                                                2 pbw                                                   ______________________________________                                    

(DENACOL EX-821 made by Nagase Chemicals Ltd.)

    ______________________________________                                        Polyvinyl alcohol                                                                             3 pbw                                                         ______________________________________                                    

(PVA217 made by Kuraray Co., Ltd.)

    ______________________________________                                        Ethylene glycol  20 pbw                                                       Isopropyl alcohol                                                                              2 pbw                                                        Acetylene glycol 1 pbw                                                        Deionized water  67 pbw                                                       (Green (G) ink)                                                               C.I. Acid Green 25                                                                             5 pbw                                                        ______________________________________                                    

Other constituents other than C. I. Acid Red 254 were the same as the Rink.

(Blue (B) ink)

    ______________________________________                                        C.I. Acid Blue 185                                                                             5 pbw                                                        ______________________________________                                    

Other constituents other than C. I. Acid Red 254 were the same as the Rink.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 1-5

A color filter was prepared as in Example 1-1, except that a blackpigment resist BK-416S made by Tokyo Ohka Kogyo Co., Ltd. was usedinstead of CK-S171B, the film thickness of the resist layer was 1.2 μm,and the following inks were used.

(Red (R) ink)

    ______________________________________                                        C.I. Pigment Red 177   4 pbw                                                  Pentaerythritol polyglycidyl ether                                                                 0.8 pbw                                                  ______________________________________                                    

(DENACOL EX-4111 made by Nagase Chemicals Ltd.)

Acrylic acid-methyl methacrylate-hydroxyethyl methacrylate

    ______________________________________                                        terpolymer        2          pbw                                              N-methyl-2-pyrrolidone                                                                          15         pbw                                              Ethylene glycol   20         pbw                                              Isopropyl alcohol 1          pbw                                              Deionized water   57.2       pbW                                              ______________________________________                                    

(Green (G) ink)

A Green ink was prepared as in the Red ink except that 5 pbw of C. I.Pigment Green 36 was used as a pigment and the amount of the deionizedwater was changed to 56.2 pbw.

(Blue (B) ink)

A Blue ink was prepared as in the Red ink except that 5 pbw of C. I.Pigment Blue 209 was used as a pigment and the amount of the deionizedwater was changed to 56.2 pbw.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 1-6

A black matrix was formed on a glass substrate as in Example 1-1. An inkreceiving layer comprising an acrylic acid/methylmethacrylate-hydroxymethyl methacrylate/N-methylolacrylamidequadripolymer was formed thereon such that the layer thickness was 1 μm.The R, G and B inks as in Example 2-1 were discharged onto the openingsin the black matrix with an ink jet printer. The inks and the inkreceiving layer were cured by heat treatment at 230° C. for 40 minutes.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 1-7

An example of an on-array type color filter will now be described withreference to FIGS. 6A to 6K. Herein, "on-array type" means that a colorfilter is provided on a substrate provided with a TFT.

A Cr gate electrode 102 having a thickness of approximately 2,000angstroms was formed on a glass substrate 101. A Si₃ N₄ insulating film103 having a thickness of approximately 5,000 angstroms was formed onthe gate electrode 102. An i-type amorphous silicon film 104 having athickness of 2,000 angstroms and a SiN etching stop layer 105 wereformed on the gate insulating film 103, followed by patterning of theetching stop layer 105.

An n⁺ -type amorphous silicon ohmic contact layer 106 having a thicknessof approximately 3,000 angstroms was formed on the i-type amorphoussilicon film 104 and the etching stop layer 105.

A source electrode 107 and a drain electrode 108, which were composed ofAl, were formed on the ohmic contact layer 106, and the unnecessarysections of the i-type amorphous silicon film 104 and the gateinsulating film 103 were removed by an etching process to form a TFT109.

The TFT 109 was covered with a SiN passivation film 110, and a lightscreening layer 111 composed of carbon black was formed thereon,followed by mask exposure. The passivation film 110 and the lightscreening layer 111 on the opening sections were removed by developingthem to form a contact hole 112 on the drain electrode 108.

The same R, G and B inks as in Example 1-1 were discharged on the openregion 120 by an ink jet process and cured by heat treatment at 230° C.for 40 minutes, thus forming a color filter 113.

An ITO transparent pixel electrode 114 was formed on the color filter113 so as to be connected to the drain electrode 108 through the contacthole 112. A polyimide alignment film 115 was formed on the entiresurfaces of the TFT 109 and transparent pixel electrode 114.

The glass substrate 101 provided with the TFT 109 and color filter 113,and a glass substrate 116 provided with a common transparent electrode117 and an alignment film 118 were arranged opposite each other and thegap between the two substrates was filled with liquid crystal 119.

No color mixing or color unevenness was observed in the resulting liquidcrystal device, and no problems occurred during a series of processingsteps. The resulting liquid crystal device was-subjected to a successive1,000 hour driving test at a temperature ranging from -20° C. to 60° C.No problems occurred.

Example 1-8

Using inks each having the same formulation other than the coloringagent, as the ink of Example 1-1, yellow, magenta, cyan and black solidimages were recorded in close proximity on a Canon NP-DRY copy paperwith an ink jet recording apparatus provided with a drop on-demand-typemulti-recording head which discharges inks by means of thermal energy inresponse to recording signals. The printed paper was heated to fix theinks. The following coloring agents were used.

(Black)

C. I. Food Black 2

(Yellow)

C. I. Direct Yellow 86

(Magenta)

C. I. Acid Red 35

(Cyan)

C. I. Direct Blue 199

Boundaries between different color inks including the black ink wereobserved. No color bleeding or nonuniform color mixing was observed.

The printed paper was immersed in tap water for 5 minutes to test for achange in printed density. The printed density did not change due to theimmersion.

Comparative Example 1

A black pigment resist CK-S171B made by Fuji-Hunt Electronics TechnologyCo., Ltd. was applied on a glass substrate by a spin coating processsuch that the film thickness was 1.0 μm, then was exposed, developed andtreated with heat to form a black matrix having a thickness of 1.0 μm.The following R, G and B inks were discharged on the matrix openings byan ink jet printer.

(Red (R) ink)

    ______________________________________                                        C.I. Acid Red 118                                                                              5 pbw                                                        ______________________________________                                    

Acrylic acid-methyl methacrylate-hydroxyethyl methacrylate

    ______________________________________                                        terpolymer        4.5 pbw                                                     N-methyl-2-pyrrolidone                                                                          15 pbw                                                      Ethylene glycol   20 pbw                                                      Ethanol            2 pbw                                                      Deionized water   53.5 pbw                                                    (Green (G) ink)                                                               C.I. Acid Green 25                                                                               5 pbw                                                      ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

(Blue (B) ink)

    ______________________________________                                        C.I. Acid Blue 113                                                                             5 pbw                                                        ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

The three discharged inks were cured by heat treatment at 230° C. for 40minutes to form a color filter.

The color filter was observed under an optical microscope. Color mixingand color unevenness were observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. R, G and B color densities significantlydecreased during these steps and some cracks were found in the colorfilter.

Example 2-1

A black pigment resist CK-S171B made by Fuji-Hunt Electronics TechnologyCo., Ltd. was applied on a glass substrate by a spin coating processsuch that the film thickness was 0.8 μm; then it was exposed, developedand treated with heat to form a black matrix having a thickness of 0.8μm. R, G and B inks were discharged on the matrix openings by an ink jetprinter.

Ink formulations were as follows:

(Red (R) ink)

    ______________________________________                                        C.I. Acid Red 118                                                                              5 pbw                                                        Dimethylolurea   2 pbw                                                        ______________________________________                                    

(Sumitex Resin ULW made by Sumitomo Chemicals Co., Ltd.)

Acrylic acid-methyl methacrylate-hydroxyethyl methacrylate

    ______________________________________                                        terpolymer           4 pbw                                                    Ethylene glycol monoethyl ether                                                                   15 pbw                                                    Ethylene glycol     20 pbw                                                    Isopropyl alcohol    2 pbw                                                    Deionized water     52 pbw                                                    (Green (G) ink)                                                               C.I. Acid Green 25   5 pbw                                                    ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

(Blue (B) ink)

    ______________________________________                                        C.I. Acid Blue 113                                                                             5 pbw                                                        ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

The three discharged inks were cured by heat treatment at 200° C. for 60minutes to form a color filter for liquid crystal devices.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 2-2

After a color filter was prepared as in Example 2-1, a two-packthermosetting resin Optomer SS6500 made by Japan Synthetic Rubber Co.,Ltd. was applied thereon by a spin coating process such that the filmthickness was 1 μm, and cured by heat treatment at 230° C. for 30minutes to form a protective film.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 2-3

A color filter was prepared as in Example 2-1, except that the followinginks were used.

(Red (R) ink)

    ______________________________________                                        C.I. Acid Red 118     5 pbw                                                   Dimethylolhydroxyethyleneurea                                                                     1.5 pbw                                                   ______________________________________                                    

(Sumitex Resin NS-3 spe made by Sumitomo Chemicals Co., Ltd.)

Methacrylic acid-ethyl acrylate-hydroxyethyl methacrylate

    ______________________________________                                        terpolymer           3 pbw                                                    Ethylene glycol monoethyl ether                                                                   20 pbw                                                    Ethylene glycol     20 pbw                                                    Isopropyl alcohol    2 pbw                                                    Deionized water     48.5 pbw                                                  (Green (G) ink)                                                               C.I. Acid Green 25   5 pbw                                                    ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

(Blue (B) ink)

    ______________________________________                                        C.I. Acid Blue 113  5 pbw                                                     ______________________________________                                    

Other constituents other than C. I. Acid Red 118 were the same as the Rink.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 2-4

A color filter was prepared as in Example 2-1, except that the followinginks were used.

(Red (R) ink)

    ______________________________________                                        C.I. Acid Red 254   5 pbw                                                     Dimethylolurea      5 pbw                                                     ______________________________________                                    

Other constituents other than C. I. Acid Red 254 were the same as the Rink.

(Blue (B) ink)

    ______________________________________                                        Polyvinyl alcohol    5 pbw                                                    (PVA117 made by Kuraray Co., Ltd.)                                            Ethylene glycol      20 pbw                                                   Isopropyl alcohol    2 pbw                                                    Acetylene glycol     1 pbw                                                    Deionized water      62 pbw                                                   (Green (G) ink)                                                               C.I. Acid Green 25   5 pbw                                                    ______________________________________                                    

Other constituents other than C. I. Acid Red 254 were the same as the Rink.

(Blue (B) ink)

    ______________________________________                                        C.I. Acid Blue 185  5 pbw                                                     ______________________________________                                    

Other constituents other than C. I. Acid Red 254 were the same as the Rink.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 2-5

A color filter was prepared as in Example 2-1, except that a blackpigment resist BK-739P made by Shin-Nippon Chemical Industries Co., Ltd.was used instead of CK-S171B, the film thickness of the resist layer was1.0 μm, and the following inks were used.

(Red (R) ink)

    ______________________________________                                        C.I. Pigment Red 177                                                                              4 pbw                                                     Dimethylolurea      2 pbw                                                     ______________________________________                                    

(Sumitex Resin ULW made by Sumitomo Chemicals Co., Ltd.)

Acrylic acid-methyl methacrylate-hydroxyethyl methacrylate

    ______________________________________                                        terpolymer         4 pbw                                                      N-methyl-2-pyrrolidone                                                                          15 pbw                                                      Ethylene glycol   20 pbw                                                      Isopropyl alcohol  1 pbw                                                      Deionized water   54 pbw                                                      ______________________________________                                    

(Green (G) ink)

A Green ink was prepared as in the Red ink except that 5 pbw of C. I.Pigment Green 36 was used as a pigment and the amount of the deionizedwater was changed to 53 pbw.

(Blue (B) ink)

A Blue ink was prepared as in the Red ink except that 5 pbw of C. I.Pigment Blue 209 was used as a pigment and the amount of the deionizedwater was changed to 53 pbw.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 2-6

A black matrix was formed on a glass substrate as in Example 2-1. An inkreceiving layer comprising an acrylic acid/methylmethacrylate-hydroxymethyl methacrylate/N-methylolacrylamidequadripolymer was formed thereon such that the layer thickness was 1 μm.The R, G and B inks as in Example 1-1 were discharged onto the openingsin the black matrix with an ink jet printer. The inks and the inkreceiving layer were cured by heat treatment at 220° C. for 30 minutes.

The color filter was observed under an optical microscope. No colormixing or color unevenness was observed.

Using the color filter, a series of steps, i.e., ITO electrodeformation, alignment film formation, and encapsulation of a liquidcrystal composition, were performed to prepare a color liquid crystaldevice as shown in FIG. 3. A liquid crystal was satisfactorily prepared.

The resulting liquid crystal device was subjected to a successive 1,000hour driving test at a temperature ranging from -20° C. to 60° C. Noproblems occurred.

Example 2-7

An example of an on-array type color filter will now be described withreference to FIGS. 6A to 6K.

A Cr gate electrode 102 having a thickness of approximately 2,000angstroms was formed on a glass substrate 101. A Si₃ N₄ insulating film103 having a thickness of approximately 5,000 angstroms was formed onthe gate electrode 102. An i-type amorphous silicon film 104 having athickness of 2,000 angstroms and a SiN etching stop layer 105 wereformed on the gate insulating film 103, followed by patterning of theetching stop layer 105.

An n⁺ -type amorphous silicon ohmic contact layer 106 having thicknessof approximately 3,000 angstroms was formed on the i-type amorphoussilicon film 104 and the etching stop layer 105.

A source electrode 107 and a drain electrode 108, which were composed ofAl, were formed on the ohmic contact layer 106, and the unnecessarysections of the i-type amorphous silicon film 104 and the gateinsulating film 103 were removed by an etching process to form a TFT109.

The TFT 109 was covered with a SiN passivation film 110, and a lightscreening layer 111 composed of carbon black was formed thereon,followed by mask exposure. The passivation film 110 and the lightscreening layer 111 on the opening sections were removed by developingthem, to form a contact hole 112 on the drain electrode 108.

The same R, G and B inks as in Example 2-1 were discharged on the openregion 120 by an ink jet process and cured by heat treatment at 200° C.for 60 minutes, thus forming a color filter 113.

An ITO transparent pixel electrode 114 was formed on the color filter113 so as to be connected to the drain electrode 108 through the contacthole 112. A polyimide alignment film 115 was formed on the entiresurfaces of the TFT 109 and transparent pixel electrode 114.

The glass substrate 101 provided with the TFT 109 and color filter 113,and a glass substrate 116 provided with a common transparent electrode117 and an alignment film 118 were arranged opposite each other and thegap between the two substrates was filled with liquid crystal 119.

No color mixing or color unevenness was observed in the resulting liquidcrystal device, and no problems occurred during a series of processingsteps. The resulting liquid crystal device was subjected to a successive1,000 hour driving test at a temperature ranging from -20° C. to 60° C.No problems occurred.

Example 2-8

Using inks each having the same formulation other than the coloringagent, as the ink of Example 2-1, yellow, magenta, cyan and black solidimages were recorded in close proximity on a Canon NP-DRY copy paperwith an ink jet recording apparatus provided with a drop on-demand-typemulti-recording head which discharges inks by means of thermal energy inresponse to recording signals. The printed paper was heated to fix theinks. The following coloring agents were used.

(Black)

C. I. Food Black 2

(Yellow)

C. I Direct Yellow 86

(Magenta)

C. I. Acid Red 35

(Cyan)

C. I. Direct Blue 199

Boundaries between different color inks including the black ink wereobserved. No color bleeding or nonuniform color mixing was observed.

The printed paper was immersed in tap water for 5 minutes to test for achange in printed density. The printed density did not change due to theimmersion.

While the present invention has been described with reference to whatare presently considered to be the preferred embodiments, it is to beunderstood that the invention is not limited to the disclosedembodiments. To the contrary, the invention is intended to cover variousmodifications and equivalent arrangements included within the spirit andscope of the appended claims. The scope of the following claims is to beaccorded the broadest interpretation so as to encompass all suchmodifications and equivalent structures and functions.

What is claimed is:
 1. A method for manufacturing a color filtercomprising the steps of: providing a black matrix on a transparentsubstrate; charging an ink comprising a thermosetting resin compositiononto an opening of said black matrix; and curing said ink by heattreatment, said thermosetting resin composition comprising a coloringagent, a multifunctional epoxide having at least two glycidyl groups anda compound crosslinked by said multifunctional epoxide.
 2. A method formanufacturing a color filter according to claim 1, wherein said blackmatrix contains a black pigment.
 3. A method for manufacturing a colorfilter according to claim 1, further comprising the step of forming anink receiving layer on said transparent substrate, before saidink-charging step.
 4. A method for manufacturing a color filteraccording to claim 3, wherein said ink receiving layer comprises a resincomposition curable by at least one of light irradiation and heattreatment.
 5. A method for manufacturing a color filter according toclaim 1, wherein said ink is charged by an ink jet printing process. 6.A method for manufacturing a color filter according to claim 1, whereinsaid multifunctional epoxide is selected from the group consisting ofethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether,propylene glycol diglycidyl ether, polypropylene glycol diglycidylether, neopentyl glycol diglycidyl ether, glycerol polyglycidyl ether,polyglycerol polyglycidyl ether, trimethylolpropane polyglycidyl ether,diglycerol polyglycidyl ether, sorbitol polyglycidyl ether, sorbitanpolyglycidyl ether, pentaerythritol polyglycidyl ether, triglycidyltris(2-hydroxyethyl) isocyanurate and adipic acid diglycidyl ether.
 7. Amethod for manufacturing a color filter according to claim 1, whereinsaid multifunctional epoxide is contained in said ink in an amount of0.01 to 10 percent by weight.
 8. A method for manufacturing a colorfilter according to claim 1, wherein said compound crosslinked by saidmultifunctional epoxide is selected from the group consisting ofpolyvinyl alcohol, acrylic resin, silicone resin, epoxy resin, cellulosederivative and polyvinyl pyrrolidone.
 9. A method for manufacturing acolor filter according to claim 8, wherein said acrylic resin isselected from the group consisting of polyacrylic acid, polymethacrylicacid, polyacrylate ester, polymethacrylate ester and polyhydroxymethylmethacrylate.
 10. A method for manufacturing a color filter according toclaim 8, wherein said cellulose derivative is selected from the groupconsisting of hydroxypropyl cellulose, hydroxyethyl cellulose, methylcellulose and carboxymethyl cellulose.
 11. A method for manufacturing acolor filter according to claim 1, wherein said compound crosslinked bysaid multifunctional epoxide is contained in said ink in an amount of0.05 to 20 percent by weight.
 12. A method for manufacturing a colorfilter according to claim 1, wherein said ink comprises water and awater soluble organic solvent.
 13. A method for manufacturing a colorfilter comprising the steps of: providing a black matrix on atransparent substrate: charging an ink comprising a thermosetting resincomposition onto an opening of said black matrix; and curing said ink byheat treatment, said thermosetting resin composition comprising acoloring agent, a cellulose-reactive compound and a compound crosslinkedby said cellulose-reactive compound.
 14. A method for manufacturing acolor filter according to claim 13, wherein said black matrix contains ablack pigment.
 15. A method for manufacturing a color filter accordingto claim 13, further comprising the step of forming an ink receivinglayer on said transparent substrate, before said ink charging step. 16.A method for manufacturing a color filter according to claim 15, whereinsaid ink receiving layer comprises a resin composition curable by atleast one of light irradiation and heat treatment.
 17. A method formanufacturing a color filter according to claim 13, wherein said ink ischarged by an ink jet printing process.
 18. A method for manufacturing acolor filter according to claim 13, wherein said cellulose-reactivecompound is selected from the group consisting of dimethylolurea,dimethylolethyleneurea, dimethylolalkyltriazone, methylateddimethylolurone, dimethylol glyoxal monoureine anddimethylolpropyleneurea.
 19. A method for manufacturing a color filteraccording to claim 13, wherein said cellulose-reactive compound isselected from the group consisting of dimethylolurea anddimethylolethyleneurea.
 20. A method for manufacturing a color filteraccording to claim 13, wherein said cellulose-reactive compound iscontained in said ink in an amount of 0.01 to 10 percent by weight. 21.A method for manufacturing a color filter according to claim 13, whereinsaid compound crosslinked by said cellulose-reactive compound isselected from the group consisting of polyvinyl alcohol, acrylic resin,silicone resin, epoxy resin, cellulose derivative andpolyvinylpyrrolidone.
 22. A method for manufacturing a color filteraccording to claim 21, wherein said acrylic resin is selected from thegroup consisting of polyacrylic acid, polymethacrylic acid, polyacrylateester, polymethacrylate ester and polyhydroxymethyl methacrylate.
 23. Amethod for manufacturing a color filter according to claim 21, whereinsaid cellulose derivative is selected from the group consisting ofhydroxypropyl cellulose, hydroxyethyl cellulose, methyl cellulose andcarboxymethyl cellulose.
 24. A method for manufacturing a color filteraccording to claim 13, wherein said compound crosslinked by saidcellulose-reactive compound is contained in said ink in an amount of0.05 to 20 percent by weight.
 25. A method for manufacturing a colorfilter according to claim 13, wherein said ink comprises water and awater soluble organic solvent.
 26. A method for manufacturing a liquidcrystal display device comprising a liquid crystal composition between apair of substrates each having an electrode, wherein a color filter madeby a method in accordance with any one of claim 1 to claim 25 isprovided on one of said substrates.
 27. A method for manufacturing aliquid crystal display device comprising a liquid crystal compositionbetween a first substrate and a second substrate, said first substratehaving a TFT array and a color filter, and said second substrate beingan electrode substrate arranged opposite the first substrate, the colorfilter being made by a method in accordance with any one of claim 1 toclaim 25, and the TFT array of said first substrate having indentedpixel sections.